Vitcas v STS board?

[vix2000]

Can anyone advise which is better at its job, vitcas board or STS please?

[PeterW]

Context ..? Which board and where are you using it..??

[vix2000]

behind a tv  to hopefully stop the heat from the twin wall pipe .  STS seems to be a lot cheaper in Wickes but would prefer the best for the job.

Edited November 3, 2022 by vix2000

[saveasteading]

I don't understand the question. Vitcas is a fire resisting board. Sts is a tile backer.

If it is to act as a thermal barrier then insulate the pipes.

If a retrofit then the one with foam in it should have more insulation.